Something more action-oriented (or at least, confrontation-oriented) may be better, but I guess it's too late to have the first skirmishes of civil war happening (and I want the Issian nobles to take part in the proposals to invest in the colony).
Any idea for a change of pace while still staying in Restov?
If you're not keen on Pennywit's excellent portrayal of wedding shenanigans,then how about making something of that which you've mentioned above?
You mention overt actions between the civil war protagonists...but what
about 'covert' actions? The PCs could be caught up in some sort of
assassination attempt? If you want to spice it up, it might be hard to
decide which side to come in on...
e.g. the person to be killed may be a Swordlord, but not be a very nice
person... Or, the person to be killed could be an Issian, but one who is
offering to sponsor the nascent kingdom...
Speaking of which - the AP as written has the PCs setting things up without
the knowledge of the Issians. I'd be interested to hear what angle you're
playing to change the story around that.